CN110702041A - Method and device for measuring area of rural land homestead and storage medium - Google Patents
Method and device for measuring area of rural land homestead and storage medium Download PDFInfo
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Abstract
The invention relates to a method, a device and a storage medium for measuring the area of a rural land homestead, wherein the measuring method comprises the steps of recording a homestead identification feature code; selecting a plurality of feature points, a proportion feature point and an image acquisition point in the same plane; carrying out image acquisition right above the image acquisition point; generating a corresponding outline graph; gridding the outline graph and calculating the number of grids in the outline graph; multiplying the obtained grid number by the area of a single grid to obtain the proportional area of the homestead; and obtaining an image scaling ratio according to the actual distance between the proportional characteristic point and the image acquisition point and the image distance, and multiplying the proportional area by the image scaling ratio to obtain the actual area of the home base. The device can run the measuring method to measure, and the storage medium stores programs and instructions corresponding to the method. The invention has the effects of high measuring speed and high measuring precision.
Description
Technical Field
The invention relates to the technical field of land area measurement, in particular to a method, a device and a storage medium for measuring the area of a rural land homestead.
Background
The homestead is the land occupied by rural farmers or individuals as the homestead and used by the group. Including building a house and building a house or deciding the land to use to build a house, etc. The homestead is the basic guarantee of peasant houses and is an important component of the peasant property. The confirmation of the home base is equivalent to the distribution of an 'identity card' for the real estate of the peasant, and the fundamental benefits of the peasant can be guaranteed.
The most important thing in the process of determining the right of the homestead is area measurement, and the accuracy and efficiency of the area measurement directly relate to whether the process of determining the right can be smoothly carried out. The currently used measuring method mainly adopts two modes of manual measurement and GPS auxiliary measurement, wherein the accuracy of the manual measurement is higher, but the measuring speed is slow, and retesting is also needed, so the measuring speed is slower. The GPS auxiliary measurement is that a worker holds a GPS device to walk in a homestead, and then the area of the homestead is measured and calculated according to a walking track, the measurement speed of the mode is high, but the problems of GPS positioning accuracy and worker walking track deviation need to be considered, the two problems can directly influence the final area calculation, particularly, the error direction is uncertain, the owner of the homestead does not agree with the error in the negative direction, repeated measurement is needed, and when the error is positive, the owner of part of the homestead can default, so that the collective benefit is damaged.
Disclosure of Invention
Aiming at the defects in the prior art, the first purpose of the invention is to provide a method for measuring the area of a rural land homestead, which has higher measuring speed and higher measuring precision.
The second purpose of the invention is to provide a device for measuring the area of a rural land homestead, which measures the area of the homestead by using the method, and has higher measuring speed and higher measuring precision.
A third object of the present invention is to provide a computer readable storage medium for measuring the area of a rural area homestead, which can read the measuring method stored in the storage medium when measuring the homestead by using other electronic devices.
The first invention is realized by the following technical scheme:
a method for measuring the area of a rural land homestead comprises the following steps:
recording a home base identification feature code;
selecting a plurality of feature points, a proportion feature point and an image acquisition point in the same plane;
acquiring an image right above the image acquisition point, wherein the acquired image comprises a homestead, a plurality of characteristic points, a proportion characteristic point and an image acquisition point;
generating a corresponding contour graph according to the position of the feature point in the image information;
gridding the outline graph and calculating the number of grids in the outline graph;
multiplying the obtained grid number by the area of a single grid to obtain the proportional area of the homestead;
obtaining an image scaling ratio according to the actual distance between the proportional characteristic point and the image acquisition point and the image distance;
and multiplying the proportional area by the image scaling ratio to obtain the actual area of the home base.
By adopting the technical scheme, when the homestead is measured, the outline shape is firstly constructed through the plurality of feature points, then the actual area of the homestead is calculated according to the scaling ratio, compared with the mode of manual measurement and GPS measurement, the selection number and the position of the feature points can be adjusted at any time according to the actual condition of the homestead, the degree of freedom is high, the flexibility is high, the condition of deviation of a walking track cannot occur, the measurement precision is higher, the measurement efficiency is considered, after the feature points are determined, the acquisition of image information can be completed through single shooting, and the repeated measurement condition can be avoided.
The invention is further configured to: the home base identification feature code is one or more of name, telephone, identification number and code.
By adopting the technical scheme, the name, the telephone, the identity card number and the code can be used as the identification feature code of the home base, so that different home bases can be distinguished according to actual conditions in the actual measurement process, the operation mode is more flexible, the identification feature codes of a plurality of home bases can be distinguished, and the disorder of similar marks is avoided.
The invention is further configured to: when the image acquisition is carried out on the homestead, the brightness is automatically adjusted, so that the display brightness of the image on the shooting interface reaches a preset value.
By adopting the technical scheme, the brightness is adjusted to the preset value and then the image acquisition is carried out, so that the problem of difficult recognition caused by the deficiency of the characteristic points, the proportion characteristic points and the image acquisition points or insufficient brightness caused by excessive brightness can be effectively avoided.
The invention is further configured to: when the image acquisition is carried out on the homestead, the definition is automatically adjusted, so that the display definition of the image on the shooting interface reaches a preset value.
Through adopting above-mentioned technical scheme, carry out image acquisition again after adjusting the definition to the default, can effectively avoid the not enough discernment difficulty and the discernment error that leads to of definition like this.
The second invention purpose of the invention is realized by the following technical scheme:
a rural land homebase area measurement device, the device comprising:
the information input module is used for inputting the identification feature code of the homestead;
the image acquisition module is used for acquiring images of the homestead;
the image processing module is used for generating a contour graph according to the image acquired by the image acquisition module and meshing the contour graph;
the calculation module is used for calculating the number of grids in the gridded outline graph and obtaining a calculation result;
and the display module is used for displaying the calculation result of the calculation module.
Through adopting above-mentioned technical scheme, the image acquisition module obtains the actual area of house after the processing of advancing image processing module and calculation module after carrying out image acquisition to the house, and this kind of measuring device's integrated level is high, and the staff can directly use, measures the area of house, can enough improve measuring speed, can also guarantee measurement accuracy.
A rural land homebase area measurement device, the device comprising:
one or more processors;
one or more memories capable of storing a computer program running on the processor;
wherein, when the processor runs the computer program, the following steps are executed:
recording a home base identification feature code;
selecting a plurality of feature points, a proportion feature point and an image acquisition point in the same plane;
acquiring an image right above the image acquisition point, wherein the acquired image comprises a homestead, a plurality of characteristic points, a proportion characteristic point and an image acquisition point;
generating a corresponding contour graph according to the position of the feature point in the image information;
gridding the outline graph and calculating the number of grids in the outline graph;
multiplying the obtained grid number by the area of a single grid to obtain the proportional area of the homestead;
obtaining an image scaling ratio according to the actual distance between the proportional characteristic point and the image acquisition point and the image distance;
and multiplying the proportional area by the image scaling ratio to obtain the actual area of the home base.
By adopting the technical scheme, when the measuring device measures the homestead, the outline shape is firstly constructed through the plurality of characteristic points, then the actual area of the homestead is calculated according to the scaling ratio, compared with the mode of manual measurement and GPS measurement, the selection quantity and the position of the characteristic points can be adjusted at any time according to the actual condition of the homestead, the degree of freedom is high, the flexibility is higher, the condition of deviation of a walking track cannot occur, the measuring precision is higher, the measuring efficiency is considered, after the characteristic points are determined, the acquisition of image information can be completed through single shooting, and the repeated measurement condition can be avoided.
The invention is further configured to: when the processor runs the computer program, the recorded home base identification feature code is one or more of name, telephone number, identification number and code.
By adopting the technical scheme, the name, the telephone, the identity card number and the code can be used as the identification feature code of the home base, so that different home bases can be distinguished according to actual conditions in the actual measurement process, the operation mode is more flexible, the identification feature codes of a plurality of home bases can be distinguished, and the disorder of similar marks is avoided.
The invention is further configured to: when the processor runs the computer program, the brightness is automatically adjusted in the process of image acquisition of the homestead, so that the display brightness of the image on the shooting interface reaches a preset value.
By adopting the technical scheme, the brightness is adjusted to the preset value and then the image acquisition is carried out, so that the problem of difficult recognition caused by the deficiency of the characteristic points, the proportion characteristic points and the image acquisition points or insufficient brightness caused by excessive brightness can be effectively avoided.
The invention is further configured to: when the processor runs the computer program, the definition is automatically adjusted in the process of image acquisition of the homestead, so that the display definition of the image on the shooting interface reaches a preset value.
Through adopting above-mentioned technical scheme, carry out image acquisition again after adjusting the definition to the default, can effectively avoid the not enough discernment difficulty and the discernment error that leads to of definition like this.
The third invention purpose of the invention is realized by the following technical scheme:
a computer-readable storage medium, on which a computer program is stored, which computer program is executed by a processor,
recording a home base identification feature code;
selecting a plurality of feature points, a proportion feature point and an image acquisition point in the same plane;
acquiring an image right above the image acquisition point, wherein the acquired image comprises a homestead, a plurality of characteristic points, a proportion characteristic point and an image acquisition point;
generating a corresponding contour graph according to the position of the feature point in the image information;
gridding the outline graph and calculating the number of grids in the outline graph;
multiplying the obtained grid number by the area of a single grid to obtain the proportional area of the homestead;
obtaining an image scaling ratio according to the actual distance between the proportional characteristic point and the image acquisition point and the image distance;
and multiplying the proportional area by the image scaling ratio to obtain the actual area of the home base.
By adopting the technical scheme, the invention also provides a computer readable storage medium, and when another measuring device capable of reading the storage medium is used, the measuring device can directly call the computer program in the storage medium to measure and calculate the area of the homestead.
In conclusion, the beneficial technical effects of the invention are as follows:
the invention provides a new method for measuring the area of a homestead, when the homestead is measured, firstly, a contour shape is constructed through a plurality of characteristic points, then the actual area of the homestead is calculated according to the zoom ratio, compared with the mode of manual measurement and GPS measurement, the selection quantity and the position of the characteristic points can be adjusted at any time according to the actual condition of the homestead, the degree of freedom is high, the flexibility is higher, the condition of deviation of a walking track can not occur, the measurement precision is higher, and the acquisition of image information can be completed by single shooting after the characteristic points are determined, and the condition of repeated measurement can be avoided.
The invention also provides a measuring device, when the measuring device works, the contour map of the homestead is firstly constructed, the actual area of the homestead is calculated according to the scaling ratio after gridding treatment, and the measuring device can carry out quick and accurate measurement.
3. The invention also provides a readable storage medium storing the method, and when the device is used, the detection device directly reads the measurement method stored in the readable storage medium to quickly and accurately measure the area of the homestead.
Drawings
FIG. 1 is a flow chart of steps provided by an embodiment of the present invention.
Fig. 2 is a block diagram of a measuring apparatus according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 is a flowchart of steps provided by an embodiment of the present invention, and fig. 1 is a flowchart of the steps of a method for measuring an area of a rural land homestead, which is disclosed by the present invention, and includes the following steps:
102, selecting a plurality of feature points, a proportion feature point and an image acquisition point in the same plane;
103, acquiring an image right above the image acquisition point, wherein the acquired image comprises a homestead, a plurality of characteristic points, a proportion characteristic point and an image acquisition point;
104, generating a corresponding contour graph according to the positions of the feature points in the image information;
and step 108, multiplying the proportional area by the image scaling ratio to obtain the actual area of the home base.
Therefore, in the actual measurement process, the area of the home can be rapidly calculated by determining the characteristic points and the scaling, the characteristic points are selected by measurement personnel and the owner of the home together, uncertain factors are eliminated before measurement, personal and collective benefits can be considered, and disputes and other problems caused by repeated measurement and area doubt are avoided.
In an actual measurement process, the number of feature points needs to be determined according to an actual shape of a measured homestead, for example, the shape comparison specification of the homestead is that the number of the feature points is four, the four feature points are respectively located at four corners of the homestead, the four feature points can form a quadrangle to enclose the homestead, and when the shape of the homestead is irregular, the number of the feature points needs to be increased according to an actual situation to ensure that the whole homestead can be enclosed.
The image acquisition points are generally selected at the center of a polygon formed by the surrounding of the feature points, so that all the feature points can be conveniently and smoothly put into the image information in the later image acquisition process. The selection of the proportion characteristic points is generally near the image acquisition point, and for the convenience of calculation, the distance between the proportion characteristic points and the image acquisition point is a fixed value, such as 0.5 meter or 1 meter, so that the staff can refer to the selection basis, and the operation difficulty can be reduced.
The feature points are selected in the same plane height, and if the building exists in the home base, auxiliary equipment is needed to determine the feature points. The auxiliary equipment can use a marking rod and the like, and all characteristic points can be collected when image information is collected.
And finally, calculating the number of grids in the outline graph to obtain the area of the outline graph, namely the area of the home base after the home base is reduced according to the proportion. The specific calculation process is as follows:
S=S1*m*k；
wherein: s is the actual area of the homestead;
s1 is the area of a single grid;
m is the number of grids in the outline graph;
k is the image scaling ratio;
the specific calculation process of M is as follows: counting the number of complete grids in the outline pattern, and counting the number of the complete grids as M1; counting the number of grids with the area larger than 50% in the outline graph, and recording as M2; counting the number of grids with the area less than 50% in the outline graph, and recording as M3;
when M2> M3, M = M1+ M3+ | M2-M3 |/2;
when M2< M3, M = M1+ M2+ | M2-M3 |/2;
the specific calculation process of K is as follows: the distance between the scale feature point and the image capture point is measured directly on the image information as S1,
k = S/S1 where S1 is constant and S1 is 0.5 or 1 meter long.
In order to be distinguished and archived, in a preferred scheme of the invention, the home identification feature code is one or more of name, telephone, identification number and code, so that each acquired contour pattern can correspond to one or more home identification feature codes, and subsequent information recording and archiving are facilitated.
In consideration of the actual situation of field acquisition, during image acquisition, the definition and brightness of the image are required to be adjusted to reach a preset value, so that a qualified image is provided for subsequent contour graph generation and gridding processing.
The invention also provides a device for measuring the area of the rural land homestead, which mainly comprises an image acquisition module, an image processing module, a calculation module, a display module and the like, wherein:
the information input module is used for inputting the identification feature code of the homestead;
the image acquisition module is used for acquiring images of the homestead;
the image processing module is used for generating a contour graph according to the image acquired by the image acquisition module and meshing the contour graph;
the calculation module is used for calculating the number of grids in the gridded outline graph and obtaining a calculation result;
and the display module is used for displaying the calculation result of the calculation module.
When the device is used, firstly, the identification feature code of the house is recorded into the information recording module, then the image acquisition module acquires image information of the house with the area needing to be measured, the adjustment of brightness, definition and the like is simultaneously carried out before the acquisition, so that the brightness, the definition and the like reach a set threshold value, then the qualified image information is sent to the image processing module to generate a contour graph and carry out gridding processing, then the processed image information is sent to the calculation module to carry out area calculation, and finally, the identification feature code of the house and the obtained area of the house are displayed on the display module.
The invention also provides another device for measuring the area of the rural land homestead, which comprises:
one or more processors;
one or more memories capable of storing a computer program running on the processor;
wherein, when the processor runs the computer program, the following steps are executed:
recording a home base identification feature code;
selecting a plurality of feature points, a proportion feature point and an image acquisition point in the same plane;
acquiring an image right above the image acquisition point, wherein the acquired image comprises a homestead, a plurality of characteristic points, a proportion characteristic point and an image acquisition point;
generating a corresponding contour graph according to the position of the feature point in the image information;
gridding the outline graph and calculating the number of grids in the outline graph;
multiplying the obtained grid number by the area of a single grid to obtain the proportional area of the homestead;
obtaining an image scaling ratio according to the actual distance between the proportional characteristic point and the image acquisition point and the image distance;
and multiplying the proportional area by the image scaling ratio to obtain the actual area of the home base.
The image acquisition points are generally selected at the center of a polygon formed by the surrounding of the feature points, so that all the feature points can be conveniently and smoothly put into the image information in the later image acquisition process. The selection of the proportion characteristic points is generally near the image acquisition point, and for the convenience of calculation, the distance between the proportion characteristic points and the image acquisition point is a fixed value, such as 0.5 meter or 1 meter, so that the staff can refer to the selection basis, and the operation difficulty can be reduced.
The feature points are selected in the same plane height, and if the building exists in the home base, auxiliary equipment is needed to determine the feature points. The auxiliary equipment can use a marking rod and the like, and all characteristic points can be collected when image information is collected.
And finally, calculating the number of grids in the outline graph to obtain the area of the outline graph, namely the area of the home base after the home base is reduced according to the proportion. The specific calculation process is as follows:
S=S1*m*k；
wherein: s is the actual area of the homestead;
s1 is the area of a single grid;
m is the number of grids in the outline graph;
k is the image scaling ratio;
the specific calculation process of M is as follows: counting the number of complete grids in the outline pattern, and counting the number of the complete grids as M1; counting the number of grids with the area larger than 50% in the outline graph, and recording as M2; counting the number of grids with the area less than 50% in the outline graph, and recording as M3;
when M2> M3, M = M1+ M3+ | M2-M3 |/2;
when M2< M3, M = M1+ M2+ | M2-M3 |/2;
the specific calculation process of K is as follows: the distance between the scale feature point and the image capture point is measured directly on the image information as S1,
k = S/S1 where S1 is constant and S1 is 0.5 or 1 meter long.
In order to be distinguished and archived, in a preferred scheme of the invention, the home identification feature code is one or more of name, telephone, identification number and code, so that each acquired contour pattern can correspond to one or more home identification feature codes, and subsequent information recording and archiving are facilitated.
In consideration of the actual situation of field acquisition, during image acquisition, the definition and brightness of the image are required to be adjusted to reach a preset value, so that a qualified image is provided for subsequent contour graph generation and gridding processing.
In the device, image information can be generated through external equipment, such as a mobile phone, a tablet, an aerial photography instrument and the like, then a contoured graph is established and gridding is carried out, and finally the actual area of the home base is obtained.
It will be understood by those skilled in the art that all or part of the steps in the method for implementing the above embodiments may be implemented by hardware associated with a program or instructions, the program may be stored in a computer readable storage medium, and when executed, the program includes the following steps:
recording a home base identification feature code;
selecting a plurality of feature points, a proportion feature point and an image acquisition point in the same plane;
acquiring an image right above the image acquisition point, wherein the acquired image comprises a homestead, a plurality of characteristic points, a proportion characteristic point and an image acquisition point;
generating a corresponding contour graph according to the position of the feature point in the image information;
gridding the outline graph and calculating the number of grids in the outline graph;
multiplying the obtained grid number by the area of a single grid to obtain the proportional area of the homestead;
obtaining an image scaling ratio according to the actual distance between the proportional characteristic point and the image acquisition point and the image distance;
and multiplying the proportional area by the image scaling ratio to obtain the actual area of the home base.
The storage medium can be ROM/RAM, magnetic disk, optical disk, U disk, mobile hard disk or SSD, etc.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (10)
1. A method for measuring the area of a rural land homestead is characterized by comprising the following steps:
recording a home base identification feature code;
selecting a plurality of feature points, a proportion feature point and an image acquisition point in the same plane;
acquiring an image right above the image acquisition point, wherein the acquired image comprises a homestead, a plurality of characteristic points, a proportion characteristic point and an image acquisition point;
generating a corresponding contour graph according to the position of the feature point in the image information;
gridding the outline graph and calculating the number of grids in the outline graph;
multiplying the obtained grid number by the area of a single grid to obtain the proportional area of the homestead;
obtaining an image scaling ratio according to the actual distance between the proportional characteristic point and the image acquisition point and the image distance;
and multiplying the proportional area by the image scaling ratio to obtain the actual area of the home base.
2. The rural land homestead area measurement method of claim 1, wherein: the home base identification feature code is one or more of name, telephone, identification number and code.
3. The rural land homestead area measurement method of claim 1, wherein: when the image acquisition is carried out on the homestead, the brightness is automatically adjusted, so that the display brightness of the image on the shooting interface reaches a preset value.
4. The rural land homestead area measurement method of claim 1, wherein: when the image acquisition is carried out on the homestead, the definition is automatically adjusted, so that the display definition of the image on the shooting interface reaches a preset value.
5. A rural land homestead area measuring device, comprising:
the information input module is used for inputting the identification feature code of the homestead;
the image acquisition module is used for acquiring images of the homestead;
the image processing module is used for generating a contour graph according to the image acquired by the image acquisition module and meshing the contour graph;
the calculation module is used for calculating the number of grids in the gridded outline graph and obtaining a calculation result;
and the display module is used for displaying the calculation result of the calculation module.
6. A rural land homestead area measuring device, comprising:
one or more processors;
one or more memories capable of storing a computer program running on the processor;
wherein, when the processor runs the computer program, the following steps are executed:
recording a home base identification feature code;
selecting a plurality of feature points, a proportion feature point and an image acquisition point in the same plane;
acquiring an image right above the image acquisition point, wherein the acquired image comprises a homestead, a plurality of characteristic points, a proportion characteristic point and an image acquisition point;
generating a corresponding contour graph according to the position of the feature point in the image information;
gridding the outline graph and calculating the number of grids in the outline graph;
multiplying the obtained grid number by the area of a single grid to obtain the proportional area of the homestead;
obtaining an image scaling ratio according to the actual distance between the proportional characteristic point and the image acquisition point and the image distance;
and multiplying the proportional area by the image scaling ratio to obtain the actual area of the home base.
7. The rural land homestead area measurement device of claim 6, wherein: when the processor runs the computer program, the recorded home base identification feature code is one or more of name, telephone number, identification number and code.
8. The rural land homestead area measurement device of claim 6, wherein: when the processor runs the computer program, the brightness is automatically adjusted in the process of image acquisition of the homestead, so that the display brightness of the image on the shooting interface reaches a preset value.
9. The rural land homestead area measurement device of claim 6, wherein: when the processor runs the computer program, the definition is automatically adjusted in the process of image acquisition of the homestead, so that the display definition of the image on the shooting interface reaches a preset value.
10. A computer-readable storage medium, on which a computer program is stored, characterized in that the computer program is executed by a processor,
recording a home base identification feature code;
selecting a plurality of feature points, a proportion feature point and an image acquisition point in the same plane;
acquiring an image right above the image acquisition point, wherein the acquired image comprises a homestead, a plurality of characteristic points, a proportion characteristic point and an image acquisition point;
generating a corresponding contour graph according to the position of the feature point in the image information;
gridding the outline graph and calculating the number of grids in the outline graph;
multiplying the obtained grid number by the area of a single grid to obtain the proportional area of the homestead;
obtaining an image scaling ratio according to the actual distance between the proportional characteristic point and the image acquisition point and the image distance;
and multiplying the proportional area by the image scaling ratio to obtain the actual area of the home base.
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| CN111175126A (en) * | 2020-01-19 | 2020-05-19 | 锦州捷通铁路机械股份有限公司 | Method for measuring ratio of ductile and brittle areas on impact fracture of nodular cast iron |
| CN112767470A (en) * | 2020-12-29 | 2021-05-07 | 黑龙江惠达科技发展有限公司 | Agricultural machinery parallel operation area calculation method based on image recognition |
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